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Air filter repair
After 40 years the foam air filter element on '79 GS850 is falling apart. Has anyone tried putting new foams on? It looks to me that if you could find the right kind of open cell foam you could wrap it around the metal frame.
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The filter foam is still available new, just under $30. You'll need to find some foam to go around the top where it mates to the airbox though. For that, closed-cell foam weatherstrip with adhesive backing is the way to go. It's the same stuff you need to replace the rubber in the airbox end caps.Dogma
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O LORD, be gracious to me; heal me, for I have sinned against you! - David
Skeptical scrutiny is the means, in both science and religion, by which deep insights can be winnowed from deep nonsense. - Carl Sagan
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'80 GS850 GLT
'80 GS1000 GT
'01 ZRX1200R
How to get a "What's New" feed without the Vortex, and without permanently quitting the Vortex
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Get the stock filter and be happy for awhile longerCowboy Up or Quit. - Run Free Lou and Rest in Peace
1981 GS550T - My First
1981 GS550L - My Eldest Daughter's - Now Sold
2007 GSF1250SA Bandit - My touring bike
Sit tall in the saddle Hold your head up high
Keep your eyes fixed where the trail meets the sky and live like you ain't afraid to die
and don't be scared, just enjoy your ride - Chris Ledoux, "The Ride"
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The price of a simple piece of foam seems awfully outrageous but after spending some time looking around the lowest priced option is to just order up a stock one, eBay is your friend.1980 Yamaha XS1100G (Current bike)
1982 GS450txz (former bike)
LONG list of previous bikes not listed here.
These aren't my words, I just arrange them
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canuckxxx
Thanks for the thoughtful responses.
Cost is the reason for asking the question. I bought this GS as a basket case and my main goal right now is to get it running so I can see what I have. I know it will not run properly without an air filter.
A $30 air filter becomes $50 with shipping and exchange to Canadian dollars. So if I can make a DIY for $5 worth of foam it makes more sense to me.
Brian
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Originally posted by canuckxxx View PostThanks for the thoughtful responses.
Cost is the reason for asking the question. I bought this GS as a basket case and my main goal right now is to get it running so I can see what I have. I know it will not run properly without an air filter.
A $30 air filter becomes $50 with shipping and exchange to Canadian dollars. So if I can make a DIY for $5 worth of foam it makes more sense to me.
Brian1980 Yamaha XS1100G (Current bike)
1982 GS450txz (former bike)
LONG list of previous bikes not listed here.
These aren't my words, I just arrange them
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I understand your concern with the price but to be honest, you'll spend more time troubleshooting and getting frustrated over why it may not be running correctly then if you get the right part from the beginning. To have a good baseline you really need to start with the correct items first. Take your time to get the parts if you need to and you'll be enjoying springtime on the bike instead of behind the wrench.Cowboy Up or Quit. - Run Free Lou and Rest in Peace
1981 GS550T - My First
1981 GS550L - My Eldest Daughter's - Now Sold
2007 GSF1250SA Bandit - My touring bike
Sit tall in the saddle Hold your head up high
Keep your eyes fixed where the trail meets the sky and live like you ain't afraid to die
and don't be scared, just enjoy your ride - Chris Ledoux, "The Ride"
Comment
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Originally posted by canuckxxx View PostThanks for the thoughtful responses.
Cost is the reason for asking the question. I bought this GS as a basket case and my main goal right now is to get it running so I can see what I have. I know it will not run properly without an air filter.Originally posted by cowboyup3371 View PostI understand your concern with the price but to be honest, you'll spend more time troubleshooting and getting frustrated over why it may not be running correctly then if you get the right part from the beginning.
A better way to approach that is: you paid less for the bike, that leaves more in your budget for parts and/or tools. If your budget isn't large enough to cover what it's going to take to get the bike going safely, you might want to re-evaluate whether the bike is the right choice.
.sigpic
mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
#1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
#2 son: 1980 GS1000G
Family Portrait
Siblings and Spouses
Mom's first ride
Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
(Click on my username in the upper-left corner for e-mail info.)
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canuckxxx
Sounds like you amuse easily. We're just on different wave lengths, different ways of going about things.
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Yes, I amuse easily. If it's cheap, it's even better.
.sigpic
mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
#1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
#2 son: 1980 GS1000G
Family Portrait
Siblings and Spouses
Mom's first ride
Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
(Click on my username in the upper-left corner for e-mail info.)
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Thrifty, eh...Ah, many's the time I've looked at the $45 air filter and said no way!
for you, I think a Urethane based foam is what you are after...it's grey, soft, permeable just like the green foam it replaces ...and isn't destroyed by oil in my recollection but you can do the wikapedia on that as a suitable substitute. An obvious thought is the ( often green?) foam from a Briggs and Stratton- an old lawnmower...you might want two of these to fill the cross-section Yet another path might be the foam filter from a Wet'n'dry Vac. Some of these should be the correct type if you read the small print....doubled maybe. They are quite thin.. as to where or how much you pay, it's luck, some hoarding against future uses, and time on the hunt versus $.
Of course, what you don't want is "bed and cushion" foam. A lot of this seems to swell and gofunny with oil or gas fumes...
A drop of gas on any scrap of likely foam should give you the clue you need. You do not want it disintegrating into the carbs.
In the same aisle of the thrift store, you may spot a new accordion- paper air filter for some car nobody has....these can be adapted with scissors and shears. You may even put some light oil on them, but I wouldn't bother- "as is" will do for quite awhile 'til you find some foam or another thrift- paper one.Last edited by Gorminrider; 01-20-2019, 08:27 PM.
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canuckxxx
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^ Nice one!
lifetime supply for 3.99US
search per "oil bath air filter foam" brings up several ideas..from a pdf, apparently "polyurethane" is correct vis a vis
"1.1
Types of Air Filters
There are many types of air filters are in use most common types are as follows:
A.
Foam
Another automobile air filter element is Oil-wetted polyurethane foam. previously Foam was used as
air cleaners on small engines like lawnmowers. Foam filters are widely used on air compressors for air tools up
to 5Hp. Depending on the grade and thickness of foam used, this type of filter can offer minimal flow
restriction. the dust is captured on foam filters, large amounts of dust trapped without major change in airflow
restriction. Example: off-road rallying, motorsport."
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